My two Maxima's spawning ... the baby blue one is about 4 years in my care, the other about 3 years. They were always under 10000k bulbs but now for the last few months they have been under 20000k Radiums. I hope they do okay in the long run.
Here is a shot of the baby blue maxima in it's prime
Ok I guess I will have to get into this one LOL... These are all about 5-6" Select Croceas.. I have had them for about 7months or so... I dont Directly feed them. They are currently at the bottom of a 55g tank with 2x250w Mh and 2x110w URI actinics...
They are a bit old and the camera isnt the greatest but ohwell..
I have been using 20000k 250W Radiums now for about 3 months. Unfortunately that baby blue clam isn't doing well. Not sure it is going to make it or not. I am thinking it wasn't getting enough light on the bottom of the tank. I have switched back to 10000k as of yesterday but I am afraid I may be far too late for this clam. A sad time as I have had it around 4 years
IMO clams really arent affected by lighting so much.. I have yet to have a Clam change colors or growth under different lighting... I think switching from 20k to 10k shouldnt be a problem but I would take some Fiberglass window screening and cover the top of the tank with a few layers and acclimate everything to the new lights by removing a sheet of the Screen Every couple days..